To compare the horizontal and vertical stereo model performance, we use the ground truth depth to generate synthesized views via DIBR with both horizontal and vertical baselines as inputs. We then evaluate the multi-view spherical stereo matching results using two synthesized views with different combinations of spherical stereo model, including i) both horizontal, ii) both vertical and iii) one horizontal + one vertical. As listed in Table REF , stereo model with all vertical directions has the best performance. This is consistent with the spherical geometry analysis in Section . The experiment is performed on Omnidirectional Stereo Dataset [1]} where only left-down view is used. The results are all collected at the 60th epoch as a fair comparison.
